结构上

As we know, the algebraic sum of Hammett constants for thesubstituted donor and acceptor groups can be used to characterize the asymmetryin simple π-organic systems, to correlate the variation of NLO properties.

推拉多烯对取代基比较敏感，易于观察到结构上的变化，是一种很好的研究对象，对推拉多烯的量化计算研究可以给我们提供分子结构和非线性光学等性能之间的关系。

The other aliquot was hydrothermally treated at 200℃,and then it was also used for fabricating the gas sensors(denoted as "pre-treated sensors").

SnO2气敏传感器从结构上分为厚膜型、薄膜型和烧结型，其中烧结型和厚膜型是当今实用气敏元件的主流。

There is not an all-purpose computer program could have deal with the gathering of the audit computer data and the succedent computer aid processing and analysising , so some attentive issues in the whole system framework are probed into.

由于从审计数据的搜集整理到数据的处理分析过程中不会有通用的程序存在，因此探讨了一个完整的计算机辅助审计系统在系统结构上需要加以注意的一些问题，并提出应当根据不同类型的审计对象，建立起有关审计模型和专家经验系统，通过数据处理后与之进行匹配，发现可能存在的问题，这也是计算机辅助审计系统需要强化的地方。

I am quite sure that the structure of Altec 288 and 287 is very similar except the magnet and a bit different in the edge of the diaphragm; one is Alnico and the other is field coil.

这里介绍一个不错的改装：把著名的ALTEC 288钴磁改为和ALTEC 287差不多的励磁版本。288和287在结构上是非常相似的，除了磁铁不同，还有就是振膜的边又些许不同。

Nigra, B. oleracea and B. carinata belonged to class 2A according to the classification of karyotypes by Stebbins (1971). According to Levitzky's and Stebbin's view, the more asymmetric karyotype a species has, the more evolved it is. Therefore, B. campestris is the furthest evolved species among the elementary species, and B. juncea and B. napus the furthest among the amphidiploid species. Compared with the previous reports, there is no any cytoplasm in the chromosome sample prepared using this protocol which is very useful for the karyotype analysis, as well as the FISH research on Brassica species.

对上述研究结果分析表明：（1）芸薹属复合种是由基本种相互杂交而成；（2）B基因组与A或与C基因组亲缘关系较远，而A和C基因组亲缘关系较近；（3）芸薹属复合种在演化过程中，发生了染色体结构上的重排现象；（4）芸薹属复合种演化过程中，rRNA基因位点发生了减少；所获结果与国外同类报道相比表明：国内的白菜型油菜存在新的rRNA基因位点，即rRNA基因在芸薹属同一物种不同的品种间具有多态性；有关这类研究国内尚未见报道。

He believes German sketching has many common points with East Painting, so he has studied early frescos in Italian Renaissance, counterdrawing Giordo, Francesco, Fran Angelico's works, and done a special research over the Vatican frescoes with mural experts from Japan.

他认为德式素描与东方绘画在结构上共性比例很大，并多次在意大利研究文艺复兴早期的壁画，摹写过乔托、佛朗契斯科、佛朗·安其里科、契马菲、马隆桥等人的壁画。

Leave structure of gymnosperm is less changable than that of angiosperm, and thus it is valuable in classification.

裸子植物的叶在结构上比被子植物的叶变化较少，而且不受环境的影响，具有一定的分类学价值。

According to the "Anthropic Principle," the substantial structure of the whole universe seems to be designed just for human

科学与信仰根据"人类原则"，整个宇宙在最深层的结构上，似乎是单为人类的存在而设计的。

The so called symmetric and antisymmetric Lamb waves are no longer symmetric and antisymmetric around the center line in the flat plate.

3在波结构上，对平板而言，所谓的"对称"和"反对称"Lamb波由于材料的梯度特性而变得不再严格的关于中心线对称或反对称。

Compound 2 and 3 were obtained in aqueous solution illustrating 1Dchannels in the structure.

化合物2和3是在常规水溶液中合成，结构上都展现了1D孔道的特点。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。